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Fix iosxr cli_config module diff issue (#44898)
* Fix iosxr cli_config module diff issue * Modify iosxr plugin to support configuration diff capability (get_diff()) within Ansible to be in sync with iosxr_config module. * Fix unit test case failure
This commit is contained in:
Ganesh Nalawade
GitHub
parent
c3e526bf2c
commit
1a684df109
4 changed files with 220 additions and 144 deletions
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@ -186,48 +186,15 @@ backup_path:
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"""
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import re
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from ansible.module_utils._text import to_text
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.network.iosxr.iosxr import load_config, get_config
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from ansible.module_utils.connection import ConnectionError
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from ansible.module_utils.network.iosxr.iosxr import load_config, get_config, get_connection
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from ansible.module_utils.network.iosxr.iosxr import iosxr_argument_spec, copy_file
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from ansible.module_utils.network.common.config import NetworkConfig, dumps
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DEFAULT_COMMIT_COMMENT = 'configured by iosxr_config'
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CONFIG_MISPLACED_CHILDREN = [
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re.compile(r'^end-\s*(.+)$')
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]
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# Objects defined in Route-policy Language guide of IOS_XR.
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# Reconfiguring these objects replace existing configurations.
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# Hence these objects should be played direcly from candidate
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# configurations
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CONFIG_BLOCKS_FORCED_IN_DIFF = [
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{
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'start': re.compile(r'route-policy'),
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'end': re.compile(r'end-policy')
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},
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{
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'start': re.compile(r'prefix-set'),
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'end': re.compile(r'end-set')
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},
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{
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'start': re.compile(r'as-path-set'),
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'end': re.compile(r'end-set')
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},
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{
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'start': re.compile(r'community-set'),
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'end': re.compile(r'end-set')
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},
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{
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'start': re.compile(r'rd-set'),
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'end': re.compile(r'end-set')
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},
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{
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'start': re.compile(r'extcommunity-set'),
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'end': re.compile(r'end-set')
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}
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]
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def copy_file_to_node(module):
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""" Copy config file to IOS-XR node. We use SFTP because older IOS-XR versions don't handle SCP very well.
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@ -265,90 +232,22 @@ def check_args(module, warnings):
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'removed in the future')
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# A list of commands like {end-set, end-policy, ...} are part of configuration
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# block like { prefix-set, as-path-set , ... } but they are not indented properly
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# to be included with their parent. sanitize_config will add indentation to
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# end-* commands so they are included with their parents
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def sanitize_config(config, force_diff_prefix=None):
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conf_lines = config.split('\n')
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for regex in CONFIG_MISPLACED_CHILDREN:
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for index, line in enumerate(conf_lines):
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m = regex.search(line)
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if m and m.group(0):
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if force_diff_prefix:
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conf_lines[index] = ' ' + m.group(0) + force_diff_prefix
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else:
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conf_lines[index] = ' ' + m.group(0)
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conf = ('\n').join(conf_lines)
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return conf
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def mask_config_blocks_from_diff(config, candidate, force_diff_prefix):
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conf_lines = config.split('\n')
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candidate_lines = candidate.split('\n')
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for regex in CONFIG_BLOCKS_FORCED_IN_DIFF:
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block_index_start_end = []
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for index, line in enumerate(candidate_lines):
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startre = regex['start'].search(line)
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if startre and startre.group(0):
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start_index = index
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else:
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endre = regex['end'].search(line)
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if endre and endre.group(0):
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end_index = index
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new_block = True
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for prev_start, prev_end in block_index_start_end:
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if start_index == prev_start:
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# This might be end-set of another regex
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# otherwise we would be having new start
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new_block = False
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break
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if new_block:
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block_index_start_end.append((start_index, end_index))
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for start, end in block_index_start_end:
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diff = False
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if candidate_lines[start] in conf_lines:
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run_conf_start_index = conf_lines.index(candidate_lines[start])
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else:
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diff = False
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continue
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for i in range(start, end + 1):
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if conf_lines[run_conf_start_index] == candidate_lines[i]:
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run_conf_start_index = run_conf_start_index + 1
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else:
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diff = True
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break
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if diff:
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run_conf_start_index = conf_lines.index(candidate_lines[start])
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for i in range(start, end + 1):
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conf_lines[run_conf_start_index] = conf_lines[run_conf_start_index] + force_diff_prefix
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run_conf_start_index = run_conf_start_index + 1
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conf = ('\n').join(conf_lines)
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return conf
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def get_running_config(module):
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contents = module.params['config']
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if not contents:
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contents = get_config(module)
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if module.params['src']:
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contents = mask_config_blocks_from_diff(contents, module.params['src'], "ansible")
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contents = sanitize_config(contents)
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return NetworkConfig(indent=1, contents=contents)
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return contents
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def get_candidate(module):
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candidate = NetworkConfig(indent=1)
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candidate = ''
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if module.params['src']:
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config = module.params['src']
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config = sanitize_config(config)
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candidate.load(config)
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candidate = module.params['src']
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elif module.params['lines']:
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candidate_obj = NetworkConfig(indent=1)
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parents = module.params['parents'] or list()
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candidate.add(module.params['lines'], parents=parents)
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candidate_obj.add(module.params['lines'], parents=parents)
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candidate = dumps(candidate_obj, 'raw')
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return candidate
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@ -367,28 +266,27 @@ def run(module, result):
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commands = None
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replace_file_path = None
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connection = get_connection(module)
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try:
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response = connection.get_diff(candidate=candidate_config, running=running_config, diff_match=match, path=path, diff_replace=replace)
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except ConnectionError as exc:
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module.fail_json(msg=to_text(exc, errors='surrogate_then_replace'))
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if match != 'none' and replace != 'config':
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commands = candidate_config.difference(running_config, path=path, match=match, replace=replace)
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elif replace_config:
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can_config = candidate_config.difference(running_config, path=path, match=match, replace=replace)
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candidate = dumps(can_config, 'commands').split('\n')
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run_config = running_config.difference(candidate_config, path=path, match=match, replace=replace)
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running = dumps(run_config, 'commands').split('\n')
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config_diff = response.get('config_diff')
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if len(candidate) > 1 or len(running) > 1:
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if replace_config:
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running_base_diff_resp = connection.get_diff(candidate=running_config, running=candidate_config, diff_match=match, path=path, diff_replace=replace)
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if config_diff or running_base_diff_resp['config_diff']:
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ret = copy_file_to_node(module)
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if not ret:
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module.fail_json(msg='Copy of config file to the node failed')
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commands = ['load harddisk:/ansible_config.txt']
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replace_file_path = 'harddisk:/ansible_config.txt'
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else:
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commands = candidate_config.items
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if commands:
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if config_diff:
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if not replace_config:
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commands = dumps(commands, 'commands').split('\n')
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commands = config_diff.split('\n')
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if any((module.params['lines'], module.params['src'])):
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if module.params['before']:
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@ -463,7 +361,8 @@ def main():
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if module.params['backup']:
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result['__backup__'] = get_config(module)
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run(module, result)
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if any((module.params['src'], module.params['lines'])):
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run(module, result)
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module.exit_json(**result)
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